I dropped out of a maths and music degree at Keele University. I was laughed at by my flat mates, outed as trans more than once, I hated the course and had a very boring lecturer, felt very homesick and just generally had an awful time, even after trying to change courses. I was also told that a councillor there recommended conversion therapy to another trans student, so didn't really feel like I could speak to anyone there.
I took a gap year, as I'd just missed the cut off for transferring. Obviously that gap year didn't go exactly as planned, but I did get to do a lot of the things I wanted to, I did some work experience in the music department of my local secondary school, as I want to be a music teacher. I also worked up to grade 8 standard on my instrument, and successfully reapplied to universities and conservatoires. In September, I'm going to be starting a degree in Classical Guitar Performance at Trinity Laban.
You still have time to register for clearing, so you don't necessarily have to take a gap year, that's your choice, but it sounds like you're really unhappy at Newcastle. Of course you can stay if you want, that's your choice, but if you're not going to classes, aren't really going out, can't do basic tasks, it really sounds like it's causing you actual depression, and I wouldn't recommend staying in that environment.
I would register for clearing, so if you decide you DO want to apply through clearing, you can do that quickly/at short notice, and then if you don't it's no big deal, you can just re-register next year (if you choose to).